Transcript Minneapolis Office Developer Interest Group (MODIG)

Minneapolis Office Developer Interest
Group (MODIG)
December 10, 2009
Client Object Model Development
Neil Iversen
http://sharepointmn.com/modig
The Plan
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Introduction
 You are here
SharePoint 2010 Developer Overview
User Group Goals
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Provide a community for SharePoint Developers
Share development knowledge
Exchange tips/tricks/other/free pizza
User Group Format
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Presentations
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Presentations are good
Demos are better
QA/Discussion/Random Things
Sharepointmn.com/modig/
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Our current home
Meeting information
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Usually has the right time
Previous presentations
Running on SharePoint
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As required by SharePoint
User Group Law
Upcoming
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Next Meeting
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Jan 26, 2010
Topic: TBD
Location: Where you are
MNSPUG
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Jan 12 (9:00am – Noon)
Topic : Composite Applications in SharePoint 2010
Events of Note
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SharePoint 2010 in Wider Availability
SharePoint 2010 Developer Center
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http://msdn.microsoft.com/en-us/sharepoint/ee514561.aspx
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What is the Client Object Model
Working with the COM
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.NET
Silverlight
Javascript
Questions
What’s a Client Object Model?
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Run code against SharePoint…only remotely
Its like a Web Service call, only prettier
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Why use it?
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‘No Code’ solutions
Fancy AJAX
Rich Internet Applications (RIA)
Integrate with WinForm/WPF Apps
(Potentially) Get around Solution Limits
So, how’s it work?
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You use its DLL
It bundles your calls
It calls a webservice
You get pretty objects back
Client Object Model
Runs on Remote Machine
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Simple API to Add, Retrieve, Update
and Manage Data in SharePoint
Commands batched for Performance
SharePoint Data
Consistent
.NET CLR
Efficient
Silverlight CLR
JavaScript
Getting Started – Where Am I?
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ClientContext
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Sets up the Environment your calls will be in
The Web you’ll be working with
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AuthenticationMode
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Web and SilverLight have a Current context
.NET Requires you to specify a location
Uses currently logged in User by default
Set to FormsAuth
Example:
clientContext = new ClientContext(txtUrl.Text);
web = clientContext.Web;
Retrieving Items
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Item Collections can be retrieved by ‘calling’ them
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LINQ is available for some objects
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web.Lists
var query = from l in web.Lists where l.Title = “Tasks”
CAML is preferred for ListItems
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CamlQuery object
Nothing Happened!
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Everything is async
Nothing happens until you
clientContext.ExecuteQuery
But first you need to tell it the objects to Load
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clientContext.Load(lists)
Why can’t I see all my fields?
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SharePoint is trying to conserve resources
It only brings back what it has to
Use Load to override this behavior
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Load(myLists, lists=>lists.Include(list
=>list.Title,list=>list.Author)
Or
Load(myLists, “Include(Title,Author)”)
Demo - .NET Client Object Model
Adding a new Item
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ListItemCreationInformation
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collection.Add(listItemCreationInformation)
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Sets the context for the Add
Returns Item
Ex: ListItem item = list.Add(lici)
Then
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item.Update()
clientContext.ExecuteQuery()
Updating an Item
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Item.Update!
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clientContext.ExecuteQuery()
Deleteing an Item
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Item.DeleteObject
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clientContext.ExecuteQuery()
Demo - .NET CRUD
ECMAScript Object Model
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Commonly called ‘javascript’ by humans
Requires:
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Needs SP.js to be loaded
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MSIE 7+
Firefox 3.5+
Safari 4.0+
<SharePoint:ScriptLink runat="server" Name="sp.js"
Localizable="false" LoadAfterUI="true" />
Stored in /LAYOUTS
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SP.js – SP.debug.js
Demo – Javascript Demo
SilverLight
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Probably the funnest of the options
Give you rich visualization options
Has Client Object Model like JS/.NET
Demo – SilverLight Demo
Questions?
Next Meeting
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Topic / Time Selection
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Client Model – Deeper Dive
Web Part Development
PowerShell
BCS
Random Stuff
Feedback Forms
Mingle, Eat, Feedback
See you next time!
Neil Iversen
Inetium
http://justaddcode.com